Zaba, Joseph
Practical petroleum engineers' handbook
Gulf Pub. Co, 1970
 Buku Referensi
Walpole, Ronald E.
Probability and statistics for engineers and scientists
Prentice-Hall, 1998
 Buku Teks SO
Scheaffer, Richard L.
Probability and statistics for engineers
Duxbury Press, 1995
 Buku Teks SO
Walpole, Ronald E.
Probability and statistics for engineers and scientists
Macmillan, 1972
 Buku Teks SO
Walpole, Ronald E.
Probability and statistics for engineers and scientists
Prentice-Hall, 1993
 Buku Teks SO